The two wires shown in the figure below are separated by d = 8.1 cm and carry cu
ID: 2092317 • Letter: T
Question
The two wires shown in the figure below are separated by d = 8.1 cm and carry currents of I = 5.45 A in opposite directions. Find the magnitude and direction of the net magnetic field at a point midway between the wires. magnitude mu T direction ---Select--- Find the magnitude and direction of the net magnetic field at point P1, 8.1 cm to the right of the wire on the right. magnitude mu T direction ---Select--- Find the magnitude and direction of the net magnetic field at point P2, 2d = 16.2 cm to the left of the wire on the left. magnitude mu T direction ---Select---Explanation / Answer
a)
r=d/2 =4.05 cm
B1=B2=uoI/2pir =(4pi*10^-7)*5.45/(2pi*0.0405)
B1=B2=2.69*10^-5
so
B=2.69*10^-5+2.69*10^-5
B=53.8uT ,into the page
b)
B=(4pi*10^-7*5.45/2pi)[1/0.081 -1/0.162]
B=6.73uT ,out of page
c)
B=(4pi*10^-7*5.45/2pi)[1/0.162 -1/0.243
B=2.24uT ,out of page
]
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